Omron CP1L CPU UNIT - 06-2007 Operation Manual page 69

Part Names and Functions
!Caution Always turn OFF the power supply to the PLC before mounting or removing
36
No. Setting
SW2 ON Data automatically
transferred from
Memory Cassette at
startup.
OFF Data not transferred.
SW3 ON A395.12 ON
OFF A395.12 OFF
SW4 ON Used for peripheral
bus.
OFF According to PLC
Setup.
Note The following data will be write-protected if pin SW1 is turned ON:
• The entire user program (all tasks)
• All data in parameter areas (such as the PLC Setup)
When SW1 is turned ON, the user program and the data in the pa-
rameter areas will not be cleared even if the All Clear operation is
performed from a Peripheral Device (i.e., the CX-Programmer).
(7) Memory Cassette Slot
Used for mounting a CP1W-ME05M Memory Cassette. When mounting
a Memory Cassette, remove the dummy cassette.
Data, such as CP1L CPU Unit programs, parameters, and data memory,
can be transferred to the Memory Cassette to be saved.
(8) Power Supply, Ground, and Input Terminal Block
Power supply ter-
minals
Ground terminals
Input terminals
(9) Option Board Slots
The following Option Boards can be mounted in either slot 1 or slot 2.
• CP1W-CIF01 RS-232C Option Board
• CP1W-CIF11 RS-422A/485 Option Board
an Option Board.
(10) Input Indicators
The input indicators light when input terminal contacts turn ON.
Description
Used to enable pro-
grams, Data Memory, or
parameters saved on a
Memory Cassette to be
opened by the CPU Unit
at startup.
This pin enables control-
ling a bit in memory with-
out using an input relay.
Used to enable a Serial
Communications Option
Board mounted in Option
Board Slot 1 to be used
by the peripheral bus.
Used to provide a 100- to 240-VAC or 24-VDC power
supply.
Functional ground ( ):
Connect this ground to strengthen noise immunity and to
prevent electric shock.
(AC power supply models only.)
Protective ground ( ):
To prevent electric shock, ground to 100 Ω or less.
Used to connect input devices.
Section 2-1
Application Default
OFF
OFF
OFF